# -*- coding: utf-8 -*-

# Copyright (c) 2011, Sergey Karakovskiy, Nikolay Sohryakov
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of Yasker nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

import logging
import urllib
from google.appengine.api import memcache
from datastore import events
from anyjson import simplejson
from datastore import ds_adaptor
from datastore.Keys import *

__author__ = 'Nikolay Sohryakov, Sergey Karakovskiy'
__copyright__ = 'Copyright 2011, Yasker'
__license__ = 'New BSD'
__email__ = 'Nikolay.Sohryakov+yasker@gmail.com, Sergey.Karakovskiy+yasker@gmail.com'


def is_authorized(user):
	users_list = memcache.get(AUTHORIZED_USERS_LIST)
	if users_list is None:
		users_list = ds_adaptor.get_authorized_users_list()
	return user in users_list


#TODO: refine this method
def get(request):
	resource = request[RESOURCE]
	if resource == ALL_PROJECTS:
		result = 201, ds_adaptor.get_all_projects()
	elif resource == PROJECT_TASKS:
		p_id = request[PROJECT_ID]
		result = 216, ds_adaptor.get_project_root_tasks(p_id)
#	elif resource == UPDATES:
#		user = memcache.get('sender')
#		if request[DELETE_TOP_UPDATE]:
#			events.clear_top_event(user)
#		result = 203, events.get_next_event(user)
	else:
		result = 103, 'Requested unknown resource'
	return result


def add(request):
	resource = request[RESOURCE]
	details = request[DETAILS]
	if resource == PROJECT:
		ds_adaptor.add_project(details)
		result = 204, details
	elif resource == TASK:
		ds_adaptor.add_task(details)
		result = 206, details
	else:
		result = 103, 'Requested unknown resource'
	return result


#TODO: refine this method
def update(request):
	resource = request[RESOURCE]
	details = request[DETAILS]
	if resource == PROJECT:
		ds_adaptor.update_project(details)
		result = 204, details
	elif resource == TASK:
		ds_adaptor.update_task(details)
		result = 206, details
	else:
		result = 103, 'Requested unknown resource'
	return result


#TODO: finish this method
def delete(request):
	return 103, 'Requested unknown resource'
